Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 5 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/11/2021   20:20:12   (  -0.14,-104.32) (  -0.13,-104.19)   14.30                80
 05/14/2021   08:23:17   (   0.13,-104.18) (   0.30,-104.93)   86.18                80
 05/15/2021   08:07:13   (   0.13,-104.18) (  -0.73,-100.41)  430.32                80
 05/16/2021   20:29:11   (  -0.12,-104.31) (  -0.42,-105.73)  160.38                80
 05/17/2021   20:07:47   (  -0.13,-104.30) (   0.56,-101.19)  354.98                80
 05/19/2021   08:29:35   (   0.11,-104.15) (   0.65,-106.45)  263.11                80
 05/20/2021   08:13:32   (   0.13,-104.15) (  -0.38,-101.93)  253.43                80
 05/21/2021   20:35:30   (  -0.11,-104.31) (  -0.76,-107.25)  335.09                80
 05/22/2021   20:14:06   (  -0.12,-104.30) (   0.22,-102.71)  180.43                80